TDPモデルを用いた微粉炭燃焼場の数値解析 : 第2報,100kg-coal/h低NO_xスワールバーナへの適用(熱工学,内燃機関,動力など)

概要

論文の詳細を見る
A numerical simulation of a pulverized coal combustion field formed by an industrial low-NO_x burner in a 100kg-coal/h test furnace is performed employing a tabulated-devolatilization-process model (TDP model), and its validity for a strong swirling flow field is investigated in detail. The predicted characteristics of the pulverized coal combustion field obtained from the simulation employing the TDP model are compared with those employing the conventional devolatilization model and the experiments. The results show that drastic differences appear between the gas flow pattern and coal particle behavior in the furnace for the TDP model and those for the conventional model. In particular, the recirculation flow behavior is strongly affected by the difference in the coal devolatilization model because of the difference in the volatile matter evolution rate. The comparisons with the experiments show that the TDP model is superior to the conventional model for predicting the pulverized coal combustion field in a swirling flow with recirculation.
2010-09-25